..., in the Ecuadorian Oriente Basin, the Hollin reservoir is an active aquifer with water meeting the requirements for use in waterflooding. But in other cases, water from production wells and from traditional surface facilities requires high investment costs because of associated facilities, chemical treatments, water...

...Abstract Abstract A oilfield, located in Iraq, is a large multi-layer oil field dominated by carbonate reservoirs of cretaceous Mishrif formation and Tertiary Asmari Formation. A oilfield is located in the transition zone between Zagros orogenic belt and the eastern edge of Arabian platform...

...Abstract Abstract This paper aims to quantify microporosity and access its impact on reservoir quality properties, to identify Hydraulic Flow Units (HFU) using core porosity and permeability data, to predict HFU and accurately estimate permeability in un-cored intervals/wells. Mercury Injection...

...Abstract Abstract Accessing behind casing opportunities plays a key role in ensuring that production targets are achieved in the PETRONAS operated fields in Malaysian basin. This is however getting more challenging as these fields comprising mostly of stacked clastic reservoirs get matured...

...Abstract Abstract Hydraulic fracturing optimisation for tight sandstone requires a reliable geomechanical model in the reservoirs and bounding formations to achieve an optimum production after fracturing. This paper presents a case study of Upper Cibulakan tight sandstone reservoirs in an oil...

... are required to achieve economically viable production. This involves well construction based on a fundamentally new configuration and the use of new technologies. When drilling wells that penetrate more than one target reservoir, the legislation requires performance monitoring and separate production...

.... waterflooding smart brine sarma experiment upstream oil & gas dsw belhaj salinity engineering brine zeta potential value wettability alteration enhanced recovery potential measurement concentration zeta potential negative zeta potential value oil recovery interaction reservoir water...

... and wettability alteration of the carbonate rock, which leads to desirable oil relative-permeability behavior. Contact angle tests are the common approach for measurement of the preferential affinity of reservoir rocks to fluids. However, the laboratory methods for contact angle measurement are costly and time...

...Abstract Abstract After more than 10-years of abandonment, deepwater oilfield M was redeveloped by using four horizontal wells with 800 to 1700 m long sections. The target was the thick, porous sandstone reservoir N with the strong bottomwater drive, which had been intensively produced for 12...

...Abstract Abstract Well testing provides useful data for reservoir characterization during various stages of field life, from exploration, development to production. The key information that are typically can be obtained are, information on reservoir properties, deliverability, and pressure data...

...Abstract Abstract Since resistivity logging is much more sensitive to rocks than to hydrocarbons in granite reservoirs, conventional logging methods cannot always accurately evaluate fluid properties and identify pay zones. Drill Stem Test (DST) is often used to identify fluid properties...

... squeezed by a strong bottomwater. One of the biggest challenges was the high uncertainty of the oil/water contacts in the current reservoir state. After reviewing the technical and geological challenges encountered, we will describe the successful approach taken to optimize the remaining reserves recovery...

...Abstract Abstract Naturally fractured reservoirs are more difficult, complex and expensive to evaluate using numerical simulation when compared to conventional reservoirs. There are well known approaches, dual porosity and dual permeability system in which two grids - one for the fractures...

.... This paper highlights the subsurface studies, gas balancing method, and surface modification effort to reduce the gas emission in Field B while reaping the benefits not just of reduced carbon tax but increased oil production and revenue. Gas injection is not just increasing reservoir pressure but also...

...Abstract Abstract Designing and delivering a successful completion in a Subsea High Rate Gas Deepwater environment is known to be one of the most challenging aspects of a Field Development. For the specific case of high rate gas wells with reservoirs requiring sand control, it makes...

...Abstract Abstract Block X of offshore Sarawak consists of stacked and multi-layer reservoirs that produce gas, condensate and oil where the production is in-commingle from many wells. 47 surface PVT samples were taken and analyzed from every reservoir during the exploration and initial...

...Abstract Abstract M oilfield is complex carbonate reservoirs in the Middle East, with strong heterogeneity, high permeability zones, local dissolution fracture area, high viscosity oil area and asphalt layer, etc. Strong heterogeneity leads to early water-out, rapid water cut rise and large...

...Abstract Abstract The operator of field S initiated a project with a key objective to unlock and increase oil recovery while maximizing the economical oil ultimate recovery and maintaining a daily production with a ceiling unit development cost. The targeted sandstone reservoirs are shallow...

... and discuss the main technical challenges that repurposing pipelines for CO 2 transport pose. Storing CO₂ in depleted gas reservoirs Despite their reduced storage capacity (in comparison to saline aquifers), depleted (or depleting) gas reservoirs offer excellent opportunities to permanently...

...Abstract Abstract The X field is a mature oil field producing with water injection in place. As part of a phased development, in Phase Two, two infill wells were planned and drilled to extract incremental recovery from a discovered undeveloped reservoir. This includes planning two horizontal...